You measure a star to have a parallax angle of 0.04 arc-seconds. What fraction of a degree is this?

Q: Use a diagram to explain what is meant by the parallax angle, p, for a star observed twice from…

A: Diagram for explaining parallax angle:        o   star                                      / \…

Q: Q15. The space observatory Gaia was launched in 2013 as the successor to Hipparcos and is returning…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: What is the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.

A: Annual parallax (p), p=0.129 arcsec

Q: You measure a star to have a parallax angle of 0.12 arc-seconds. What fraction of a degree is this?…

A:

Q: We can use the parallax equation to determine the distances (in pc) to the stars. 1 dA da dB dB = =…

A: From the given related question,we have,mv = 14Parallax of star A = 0.060 arc secondsParallax of…

Q: 4. Alpha Siruis is 3.9 x 1015 miles away from the Earth. Calc the parallax at which the star is…

A: The distance between Alpha Sirius and Earth is given as, d=3.9×1015 miles. TO DETERMINE: The…

Q: Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our…

A: Distance of earth from sun, dE = 150 x106 km Apparent brightness of sun at earth distance is BE =…

Q: f a star’s lifespan is 1.1 × 10 7 years, what is its mass and spectral type?

A: The relation between star's lifetime and mass is given by :  tt⊙=MM⊙−2.5Here, M⊙ is mass of sun.…

Q: Why are Earth-based parallax measurements limited to the nearest stars?

A: Parallax is one of the methods used by astronomers to estimate the distance to stars and other…

Q: If a star has a parallax angle of 0.768" and the width of your pinky is about 1 degree, what…

A: Parallax method is used to find the distances of distant objects. Parallax can be understood with…

Q: Orion nebula is located at 450 pc. Calculate the parallax angle.

A: Parallax is a method used to calculate the distance to astronomical objects like stars. Parallax is…

Q: If a star is located at 62.5 pc and has an apparent magnitude of 6 what is it absolute magnitude?

A: The brightness of a star is determined by its composition and distance from the Earth. There are two…

Q: What is the distance in light years from Earth to a star that makes a parallax angle of 2.0 arc…

A: Given  parallex(p)=2 arc second

Q: Why can’t astronomers use parallax to measure the distance to stars that are extremely far away?

A: Because it is difficult to measure from earth reason is effects of earth atmospheric. Parallel angle…

Q: Explain Parallax

A: There is an apparent shift in position of the object due to the change in point of observation .This…

Q: A star has a parallax of 0.8 seconds of arc. What is the distance of the star?

A: Parallax can be defined as the change in the position of an object due to a change in the observer's…

Q: Find the distance in parsecs to van maanen's star, a nearby white dwarf, which has an annual…

A: given ,       parallax (p) = 0.232 arcsec

Q: The difference in absolute magnitude between two objects at the same distance is related to their…

A: "Since you have asked multiple question, as per our guidelines we will solve the first question for…

Q: A star is observed at a distance of 90 pc. What will be its parallax angle?

A: Parallax is defined as the change in the apparent position of an object due to a change in the…

Q: The red supergiant star in Orion is called Betelgeuse, and its distance is 130 pc. What is the…

A: Parallax is the defined as the apparent shift in the position of any star (or other object) against…

Q: What is the maximum luminosity for star of 5.76×1010 Msun.

A: In hydrostatic equilibrium, the radiation pressure and gravitational force will balance each other.…

Q: an object  is a located at the following equatorial coordinates (J2000): 12h 27m 53.6s (right…

A:

Q: the parallax angle of a star to be 0.002 arc-seconds.  what would the  distance be to this star?

A: Given, Parallax angle, p=0.002 arc-seconds

Q: How many parsecs are there in 212 light-years?

A: We know that 1 light year = 0.3066 parsecs

Q: If a star has a parallax of 0.016 arc second how far is it?

A: Parallax is the shift in the apparent position of stars when observed from different positions. This…

Q: Which star in the table below has the least surface temperature?   Star Name d (parsecs) Parallax…

A: Since, distance of the star in terms of Parallax is, d=1parallax (in arc-sec)parsecs Now from…

Q: A star a distance of 1 parsec away has a parallax angle of 1 definition. by arcsecond arcminute…

A: A parsec is defined as the distance to a star which has a parallax angle of 1 arcsecond.

Q: A star is observed to have a parallax of 0.05".  If we were to send a radio signal towards this star…

A: The parallax angle of a star is observed to be θ=0.05''=0.05 arcseconds. Let the distance to the…

Q: I 19 14: = 24.88 mas y-¹ lota Psc has a magnitude of proper motion of 2 = (Ha*)² + (Hg) ² =…

A: GivenWhat is the magnitude of proper motion for lota psclota Piscium  is single, F-type main…

Q: A distant FO star is 6.3 times less bright than a nearer FO star which has a parallax of 0.2 arcsec.…

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Q: What is the dependence of the intensities of stars on parallax? Hint: consider the inverse-square…

A:

Q: is

A: The relationship between apparent visual magnitude(m), Absolute visual magnitude(Mv) and distance(d)…

Q: A certain star is 13.7 times dimmer than a star with apparent magnitude m = 3.9.  What is the…

A: We are given the ratio of brightness of stars. We are given the apparent magnitude of the brighter…

Q: The mass of a star is 1.99·1031 kg and its angular velocity is 1.60E-7 rad/s. Find its new angular…

A: Given data: The mass of the star is m=1.99x1031 kg. The initial angular velocity of the star is…

Q: If a star has a parallax of 2 x 10 degree, how far away is it? O 7 pc O 14 pc O 28 pc O 5x 104 LY

A: Given, parallax angle θ=2 x 10-5 degree                                   θ=2 x 10-5 x 3600…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.